Hi Paul,
sorry for the late response - no currently you can't setup payment details at the event level (because we use plugins for payment) - have it on my todo-list though.
It would require some code changes for two different paypal addresses, but shoulnd't be that complicated.
Also I have customers who pay within the business by cash, how would I handle this because if cash was an option that showed online, customers may choose it. Is possible for only a superuser or similar to see the cash payment?
You can set the cash payment plugin to the ACL group special (or any other you can create them yourself) so that only users that are in that group can use them.
Kind regards,
Yves